text: import * as stringUtil from "./../../utils/string.js";
  
  /**
   * set and interpret a TMX property value
   * @ignore
   */
  function setTMXValue(name, type, value) {
      var match;
  
      if (typeof(value) !== "string") {
          // Value is already normalized (e.g. with JSON maps)
          return value;
      }
  
      switch (type) {
  
          case "int" :
          case "float" :
              value = Number(value);
              break;
  
          case "bool" :
              value = (value === "true");
              break;
  
          default :
              // try to parse it anyway
              if (!value || stringUtil.isBoolean(value)) {
                  // if value not defined or boolean
                  value = value ? (value === "true") : true;
              }
              else if (stringUtil.isNumeric(value)) {
                  // check if numeric
                  value = Number(value);
              }
              else if (value.search(/^json:/i) === 0) {
                  // try to parse it
                  match = value.split(/^json:/i)[1];
                  try {
                      value = JSON.parse(match);
                  }
                  catch (e) {
                      throw new Error("Unable to parse JSON: " + match);
                  }
              }
              else if (value.search(/^eval:/i) === 0) {
                  // try to evaluate it
                  match = value.split(/^eval:/i)[1];
                  try {
                      // eslint-disable-next-line
                      value = eval(match);
                  }
                  catch (e) {
                      throw new Error("Unable to evaluate: " + match);
                  }
              }
              else if (
                  ((match = value.match(/^#([\da-fA-F])([\da-fA-F]{3})$/))) ||
                  ((match = value.match(/^#([\da-fA-F]{2})([\da-fA-F]{6})$/)))
              ) {
                  value = "#" + match[2] + match[1];
              }
  
              // normalize values
              if (name.search(/^(ratio|anchorPoint)$/) === 0) {
                  // convert number to vector
                  if (typeof(value) === "number") {
                      value = {
                          "x" : value,
                          "y" : value
                      };
                  }
              }
      }
      // return the interpreted value
      return value;
  }
  
  /**
   * @ignore
   */
  function parseAttributes(obj, elt) {
      // do attributes
      if (elt.attributes && elt.attributes.length > 0) {
          for (var j = 0; j < elt.attributes.length; j++) {
              var attribute = elt.attributes.item(j);
              if (typeof(attribute.name) !== "undefined") {
                  // DOM4 (Attr no longer inherit from Node)
                  obj[attribute.name] = attribute.value;
              } else {
                  // else use the deprecated ones
                  obj[attribute.nodeName] = attribute.nodeValue;
              }
          }
      }
  }
  
  /**
   * decompress zlib/gzip data (NOT IMPLEMENTED)
   * @ignore
   * @function
   * @name decompress
   * @param  {number[]} data Array of bytes
   * @param  {string} format compressed data format ("gzip","zlib")
   */
  export function decompress() {
      throw new Error("GZIP/ZLIB compressed TMX Tile Map not supported!");
  };
  
  /**
   * Decode a CSV encoded array into a binary array
   * @ignore
   * @function
   * @name decodeCSV
   * @param  {string} input CSV formatted data (only numbers, everything else will be converted to NaN)
   * @returns {number[]} Decoded data
   */
  export function decodeCSV(input) {
      var entries = input.replace("\n", "").trim().split(",");
  
      var result = [];
      for (var i = 0; i < entries.length; i++) {
          result.push(+entries[i]);
      }
      return result;
  };
  
  /**
   * Decode a base64 encoded string into a byte array
   * @ignore
   * @function
   * @name decodeBase64AsArray
   * @param {string} input Base64 encoded data
   * @param {number} [bytes] number of bytes per array entry
   * @returns {Uint32Array} Decoded data
   */
  export function decodeBase64AsArray(input, bytes) {
      bytes = bytes || 1;
  
      var i, j, len;
      var dec = window.atob(input.replace(/[^A-Za-z0-9\+\/\=]/g, ""));
      var ar = new Uint32Array(dec.length / bytes);
  
      for (i = 0, len = dec.length / bytes; i < len; i++) {
          ar[i] = 0;
          for (j = bytes - 1; j >= 0; --j) {
              ar[i] += dec.charCodeAt((i * bytes) + j) << (j << 3);
          }
      }
      return ar;
  };
  
  /**
   * Decode the given data
   * @ignore
   */
  export function decode(data, encoding, compression) {
      compression = compression || "none";
      encoding = encoding || "none";
  
      switch (encoding) {
          case "csv":
              return decodeCSV(data);
  
          case "base64":
              var decoded = decodeBase64AsArray(data, 4);
              return (
                  (compression === "none") ?
                  decoded :
                  decompress(decoded, compression)
              );
  
          case "none":
              return data;
  
          case "xml":
              throw new Error("XML encoding is deprecated, use base64 instead");
  
          default:
              throw new Error("Unknown layer encoding: " + encoding);
      }
  };
  
  /**
   * Normalize TMX format to Tiled JSON format
   * @ignore
   */
  export function normalize(obj, item) {
      var nodeName = item.nodeName;
  
      switch (nodeName) {
          case "data":
              var data = parse(item);
              // #956 Support for Infinite map
              // workaround to prevent the parsing code from crashing
              data.text = data.text || data.chunk.text;
              // When no encoding is given, the tiles are stored as individual XML tile elements.
              data.encoding = data.encoding || "xml";
              obj.data = decode(data.text, data.encoding, data.compression);
              obj.encoding = "none";
              break;
  
          case "imagelayer":
          case "layer":
          case "objectgroup":
          case "group":
              var layer = parse(item);
              layer.type = (nodeName === "layer" ? "tilelayer" : nodeName);
              if (layer.image) {
                  layer.image = layer.image.source;
              }
  
              obj.layers = obj.layers || [];
              obj.layers.push(layer);
              break;
  
          case "animation":
              obj.animation = parse(item).frames;
              break;
  
          case "frame":
          case "object":
              var name = nodeName + "s";
              obj[name] = obj[name] || [];
              obj[name].push(parse(item));
              break;
  
          case "tile":
              var tile = parse(item);
              if (tile.image) {
                  tile.imagewidth = tile.image.width;
                  tile.imageheight = tile.image.height;
                  tile.image = tile.image.source;
              }
              obj.tiles = obj.tiles || {};
              obj.tiles[tile.id] = tile;
              break;
  
          case "tileset":
              var tileset = parse(item);
              if (tileset.image) {
                  tileset.imagewidth = tileset.image.width;
                  tileset.imageheight = tileset.image.height;
                  tileset.image = tileset.image.source;
              }
  
              obj.tilesets = obj.tilesets || [];
              obj.tilesets.push(tileset);
              break;
  
          case "polygon":
          case "polyline":
              obj[nodeName] = [];
  
              // Get a point array
              var points = parse(item).points.split(" ");
  
              // And normalize them into an array of vectors
              for (var i = 0, v; i < points.length; i++) {
                  v = points[i].split(",");
                  obj[nodeName].push({
                      "x" : +v[0],
                      "y" : +v[1]
                  });
              }
  
              break;
  
          case "properties":
              obj.properties = parse(item);
              break;
  
          case "property":
              var property = parse(item);
              // for custom properties, text is used
              var value = (typeof property.value !== "undefined") ? property.value : property.text;
  
              obj[property.name] = setTMXValue(
                  property.name,
                  // in XML type is undefined for "string" values
                  property.type || "string",
                  value
              );
              break;
  
          default:
              obj[nodeName] = parse(item);
              break;
      }
  };
  
  /**
   * Parse a XML TMX object and returns the corresponding javascript object
   * @ignore
   */
  export function parse(xml) {
      // Create the return object
      var obj = {};
  
      var text = "";
  
      if (xml.nodeType === 1) {
          // do attributes
          parseAttributes(obj, xml);
      }
  
      // do children
      if (xml.hasChildNodes()) {
          for (var i = 0; i < xml.childNodes.length; i++) {
              var item = xml.childNodes.item(i);
  
              switch (item.nodeType) {
                  case 1:
                      normalize(obj, item);
                      break;
  
                  case 3:
                      text += item.nodeValue.trim();
                      break;
              }
          }
      }
  
      if (text) {
          obj.text = text;
      }
  
      return obj;
  };
  
  /**
   * Apply TMX Properties to the given object
   * @ignore
   */
  export function applyTMXProperties(obj, data) {
      var properties = data.properties;
      var types = data.propertytypes;
      if (typeof(properties) !== "undefined") {
          for (var property in properties) {
              if (properties.hasOwnProperty(property)) {
                  var type = "string";
                  var name = property;
                  var value = properties[property];
                  // proof-check for new and old JSON format
                  if (typeof properties[property].name !== "undefined") {
                      name = properties[property].name;
                  }
                  if (typeof(types) !== "undefined") {
                      type = types[property];
                  } else if (typeof properties[property].type !== "undefined") {
                      type = properties[property].type;
                  }
                  if (typeof properties[property].value !== "undefined") {
                      value = properties[property].value;
                  }
                  // set the value
                  obj[name] = setTMXValue(name, type, value);
              }
          }
      }
  };
  